TabProxy — Per-Site Proxy Switcher is a browser extension from r0mm4k that sends selected websites through user-supplied proxy servers while leaving unmatched traffic on a direct connection. It focuses on targeted routing for testing, research, and project-specific browsing rather than replacing the browser’s entire network setup. Its compact controls keep routine switching close at hand too.

The extension supports HTTP, HTTPS, SOCKS4, and SOCKS5 profiles, along with optional username and password authentication. Domain rules automate routing, while the toolbar popup manages the current site and displays its proxy status. JSON import and export also make configurations easier to back up, move, or restore across separate browser profiles during recurring test work.

Site rules do the steering

Despite its name, TabProxy works mainly through domain-based proxy routing, not fully isolated proxy connections for every tab. The active-tab popup changes the rule for the website currently open, and colored tab groups can show which profile applies. Tabs visiting the same domain still follow the same matching rule, so the extension is better understood as a per-site routing manager.

Selective routing is the extension’s strongest advantage. Only websites that match a saved rule or manual override use the chosen proxy, while other pages stay on the direct connection. This setup helps developers and QA teams compare regional behavior or reach proxy-dependent environments without changing system settings. Actual page speed, however, still depends on the quality of the supplied proxy.

TabProxy keeps profiles, rules, and credentials in local browser storage, and the developer states that it does not send configuration data for analytics. That privacy stance is useful, yet saved proxy passwords remain in plain text, including inside exported JSON backups. Users also need to find and maintain their servers, which adds setup work for anyone unfamiliar with proxy management.

A precise tool with sharp edges

TabProxy is a focused choice for technical users who want per-site proxy switching without routing every browsing session through one server. Its protocol support, automatic domain rules, active-site controls, and portable backups make repeated testing easier. The trade-offs are equally clear: it supplies no proxy service, does not create truly separate tab identities, and stores credentials without encryption. For developers, researchers, and QA teams managing proxies, it offers control. Casual users seeking one-click privacy tools can find the setup demanding.